The sentences that need in-text references are:
-
A new international study shows almost 80% of South African pupils do not develop basic reading skills by the time they reach Grade 5.
- This statement presents data from a study and requires a reference to the original source.
-
Hyland points out that texts that share the same purpose often share the same structure.
- This sentence refers to a specific author (Hyland) and requires an in-text citation to properly credit the source.
The other two sentences do not reference specific data, authors, or studies, and therefore do not need in-text references.